Climate Divisions for Alaska Based on Objective Methods

AbstractAlaska encompasses several climate types because of its vast size, high-latitude location, proximity to oceans, and complex topography. There is a great need to understand how climate varies regionally for climatic research and forecasting applications. Although climate-type zones have been established for Alaska on the basis of seasonal climatological mean behavior, there has been little attempt to construct climate divisions that identify regions with consistently homogeneous climatic variability. In this study, cluster analysis was applied to monthly-average temperature data from 1977 to 2010 at a robust set of weather stations to develop climate divisions for the state. Mean-adjusted Advanced Very High Resolution Radiometer surface temperature estimates were employed to fill in missing temperature data when possible. Thirteen climate divisions were identified on the basis of the cluster analysis and were subsequently refined using local expert knowledge. Divisional boundary lines were drawn th...

[1]  U. Bhatt,et al.  Surface-based temperature inversions in Alaska from a climate perspective , 2010 .

[2]  Yurdanur S. Unal,et al.  Redefining the climate zones of Turkey using cluster analysis , 2003 .

[3]  Fred G. Evenden,et al.  Climates of the States , 1979 .

[4]  W. Briggs.  Statistical Methods in the Atmospheric Sciences , 2007 .

[5]  K. Wolter.  The Southern Oscillation in Surface Circulation and Climate over the Tropical Atlantic, Eastern Pacific, and Indian Oceans as Captured by Cluster Analysis , 1987 .

[6]  C. Tucker,et al.  Circumpolar Arctic Tundra Vegetation Change Is Linked to Sea Ice Decline , 2010 .

[7]  Matthew J. Bunkers,et al.  Definition of Climate Regions in the Northern Plains Using an Objective Cluster Modification Technique , 1996 .

[8]  J. Papineau,et al.  Wintertime temperature anomalies in Alaska correlated with ENSO and PDO , 2001 .

[9]  J. Omernik,et al.  Ecoregions of Alaska , 1995 .

[10]  J. Wallace,et al.  Teleconnections in the Geopotential Height Field during the Northern Hemisphere Winter , 1981 .

[11]  Randall M. Dole,et al.  Persistent Anomalies of the Extratropical Northern Hemisphere Wintertime Circulation: Structure , 1982 .

[12]  Arthur T. DeGaetano.  Delineation of Mesoscale Climate Zones in the Northeastern United States Using a Novel Approach to Cluster Analysis , 1996 .

[13]  J. Comiso.  Warming trends in the Arctic from clear sky satellite observations , 2003 .

[14]  James W. Hurrell,et al.  Decadal atmosphere-ocean variations in the Pacific , 1994 .

[15]  J. Wallace,et al.  A Pacific Interdecadal Climate Oscillation with Impacts on Salmon Production , 1997 .

[16]  P. Lefale,et al.  Ua ‘afa le Aso Stormy weather today: traditional ecological knowledge of weather and climate. The Samoa experience , 2010 .

[17]  Impact of the Pacific Decadal Oscillation on relationships between temperature and the Arctic Oscillation in the USA in winter , 2005 .

[18]  E. M. Fitton.  THE CLIMATES OF ALASKA , 1930 .

[19]  David D. Parrish,et al.  NORTH AMERICAN REGIONAL REANALYSIS , 2006 .

[20]  J. R. Jensen,et al.  Delineation of climate regions using in-situ and remotely-sensed data for the Carolinas , 2008 .

[21]  W. Köppen,et al.  Die Klimate der Erde : Grundriss der Klimakunde , 1923 .

[22]  Badraddin Yusuf Mohammad Ahmed.  Climatic classification of Saudi Arabia: An application of factor -- Cluster analysis , 1997 .

[23]  Michael E. Krauss,et al.  Indigenous Peoples and Languages of Alaska , 2010 .

[24]  Randall M. Dole,et al.  Persistent Anomalies of the Extratropical Northern Hemisphere Wintertime Circulation: Geographical Distribution and Regional Persistence Characteristics , 1983 .

[25]  U. Bhatt,et al.  Large-Scale Climate Controls of Interior Alaska River Ice Breakup , 2011 .

[26]  T. D. Mitchell,et al.  An improved method of constructing a database of monthly climate observations and associated high‐resolution grids , 2005 .

[27]  New Climate Divisions for Monitoring and Predicting Climate in the , 2007 .

[28]  J. Wallace,et al.  The Arctic oscillation signature in the wintertime geopotential height and temperature fields , 1998 .

[29]  松山 洋.  「Statistical Methods in the Atmospheric Sciences(2nd edition), International Geophysics Series 91」, Daniel S. Wilks著, Academic Press, 2005年11月, 648頁, $94.95, ISBN978-0-12-751966-1(本だな) , 2010 .

[30]  R. P. Pearce,et al.  Large-Scale Dynamical Processes in the Atmosphere , 1983 .

[31]  C. Fabricius,et al.  Expert and Generalist Local Knowledge about Land-cover Change on South Africa's Wild Coast: Can Local Ecological Knowledge Add Value to Science? , 2007 .

[32]  A. J. Henry.  CLIMATE OF ALASKA , 1897 .

[33]  John M. Wallace,et al.  Planetary-Scale Atmospheric Phenomena Associated with the Southern Oscillation , 1981 .

[34]  S. Nigam,et al.  The North Pacific Oscillation–West Pacific Teleconnection Pattern: Mature-Phase Structure and Winter Impacts , 2008 .

[35]  C. Daly,et al.  A Discriminant Analysis Model of Alaskan Biomes Based on Spatial Climatic and Environmental Data , 2009 .

[36]  A. Barnston,et al.  Classification, seasonality and persistence of low-frequency atmospheric circulation patterns , 1987 .

[37]  Brian Hartmann,et al.  The Significance of the 1976 Pacific Climate Shift in the Climatology of Alaska , 2005 .

[38]  Robert G. Quayle,et al.  A Historical Perspective of U.S. Climate Divisions , 1996 .

[39]  Klaus Wolter,et al.  Short-Term Climate Extremes over the Continental United States and ENSO. Part I: Seasonal Temperatures , 1999 .

[40]  M. D. Fleming,et al.  Comparing Maps of Mean Monthly Surface Temperature and Precipitation for Alaska and Adjacent Areas of Canada Produced by Two Different Methods , 2010 .

[41]  R. Fovell,et al.  Climate zones of the conterminous United States defined using cluster analysis , 1993 .